The bizarre gift came about after the criminal's pen pal Darren Holdcroft heard about Leah's plight after helping another fellow patient at the Royal Stoke University hospital.

Bronson - serving a life sentence for robbery and kidnap - has already donated two pieces of artwork and a signed, self-written book to four-year-old leukemia sufferer Frankie Allen.

Darren told the Mirror: "Frankie's dad asked me if I could mention it to Charlie to see if he could help Leah and her family with any future fundraising so he spent a day creating this get well soon piece for her.

"It's a side not many people get to see. The amount of art he produces for sick children is unbelievable and he has helped raise thousands of pounds and hopefully now he can help to raise some funds for Leah and her family's charities to."